1. Fundamentals of Algebraic Graph Transformation;Ehrig;Monographs in Theoretical Computer Science. Springer,2006
2. R. Grosu and A. Smolka. Safety Liveness Semantics for UML2.0 Sequence Diagrams, Available from http://citeseer.uark.edu:8080/citeseerx/viewdoc/summary?doi=10.1.1.127.7851; 2005.
3. OMG-PTC/03-08-02. UML2.0 Superstructure Specification; 2003.
4. J. Klose and H. Wittke. An Automata Based Interpretation of Live Sequence Charts, Springer-Verlag Berlin Heidelberg T. Margaria and W. Yi: TACAS 2001 vol.2031 pages 512-527; 2001.
5. Constructing Automata for UML2.0 Sequence Diagrams, Institut For Informatik Der Ludwig Maximilians;Wuttke;Universitat Munchen,2005